A support bracket is affixed to a medical gas outlet. Protruding members on end portion of central bridge are formed, together with the bridge itself, when cut out by a wire-cutting means. In one arrangement, a data communications device transfers data. The method comprises the steps of: positioning the mold in a preheated furnace so that the furnace substantially surrounds the mold and so that a longitudinal axis of the long thin portion of the mold cavity is in an upright orientation; heating the mold in the furnace to a temperature between 1045 C.